Sewing



A. M. BATES SEWING Filed April 20, 1925 v smut I Adelmer/lBates $8., aM9 a Patented. May 13, 1930 UNITED STATES, PATENT OFFICE ADELMER M.

BATES, OF OHIO AGO, ILLINOIS, ASSIGNOR, BY MESN'E ASSIGNMENTS, TO

51. REGIS PAPER COMPANY, OF NEW YORK, N. Y. A CORPORATION OF NEW YORKSEWING Application filed' April 20, 1925. Serial No. 24,364.

This invention relates to sewing, and more particularly to lubricatingthe thread and preventing the overheating of the sewing machine needle.

A sewing machine cannot be run at any considerable speed in sewingcertain kinds of material, such as paper, without overheating theneedle, unless some provision is made to prevent this result. Accordingto this invention' the thread is lubricated, a' blast of' air isdirected against the needle, and vaporizable liquid is supplied in closeproximity to the needle. Other features of the invention will appear asthe description proceeds.

In the accompanying drawing forming part of this specification, Fig. lisa somewhat diagrammatic elevation of a sewing machine adapted to carryout this invention; Fig. 2 is a somewhat diagrammatic sectionsubstantially on the line 22 of Fig-1, showing the relation of the airnozzle to the needles.

The particular construction of the sewing -machine is immaterial. Oneform of sewing head 10 is shown having an arm 11 supporting the needleoperating parts. A pipe12 is attached to this arm in any convenientmanner, as by clips 13, and is bent downward toward the needle andterminates in a nozzle 14:. Preferably this nozzle is of an adjustabletype so that, by turning thetip 15 of the nozzle, the size of theopening may be varied. A stop-cock 16 is provided for shutting olf theair completely, when desired, without as changing the adjustment of thenozzle.

In the construction shown, a bracket 17 is attached to arm 11 and isadapted to support a receptacle 18. The receptacle 18 is pro- Vided witha roller 19. A thread 20 is led from any suitable source through an eye21 on the receptacle, beneath the roller 19 and out through another eye22 to suitable tension means 23 on the sewing machine, from which itpasses to the needle in the usual manner.

Thereceptacle is filled, or partly filled, with a lubricant24. Thepreferred form of lubricant is soft soap, or a mixture of soap andwater. f The sewing machine maybe provided with one or more needles. Inthe form shown the thread lubricated. In order that the' there are twoneedles 25 and 26, as shown in Fig. 2. Thread 20 is led to needle '25,and another thread 27 may be led through receptacle 18 on one side ofthread 20 and forward through any desired tension means to needle 26.

In the arrangement shown in Fig. 2, it is clearly indicated that nozzle14 is adapted to play a jetof air 28, indicated in that figure,primarily against needle 25, but a little out of direct alignment withthat needle, so that a portion of the blast passes on unimpeded toneedle 26. In this way both needles are cooled by a blast through onenozzle. A small nozzle is used, and a narrow blast is directed exactlyonto the needle or needles, so that a minimum power for producing theblast is necessary. IVhile-the blast may be directed against the needlealone and produce suificient cooling, it is preferable to have itcontact the thread, and to have the thread moistened by some liquid,such as water, Which-is vaporized by the action of the air and producesan additional cooling effect in the immediate vicinity of the needle.

In order to avoid friction of the needle on the thread as well asfriction of the thread through the material and against other parts ofthe sewing machine, it is desirable to have an proper amount oflubricant may be used and that it may remain in the desired condition,it is preferable to use a lubricant that is not vaporized by the actionof air at ordinary tempcraturesa A lubricant such as soap is preferableto such a lubricantv as oil, in sewing paper, because soap is notabsorbed by, and does not materially affect the condition of, the paperaround the needle holes, as does oil. Vaporizable liquids other thanwater might be used for their cooling effect, and lubricants other thansoap might be mixed I with the cooling fluid, but soap and water form adesirable combination which is not costly and is readily obtainable, andthe two substances are completely miscible and easily applied.

It is evident that the presence of a vaporizable liquid inthe-threadwill have a cooling effect on the'ncedle even in'the absence to v of aspecially directed jet of air, as there will be always some vaporizationof the l1qu1d adjacent the needle and consequently some cooling effect,which will increase automatically as the temperature of the needleincreases. A vaporizableliquid might be supplied in the vicinity of theneedle by means other than the thread, either with or without the jet ofair. Therefore, while moistening the thread with a vaporizable liquid,lubrieating the thread, and directing a jet of air against the needleand adjacent thread are features which may be combined advantageouslyand work together to produce a result which is more than the sum oftheir separate results, it is possible to obtain beneficial results fromless than the complete combination disclosed. h

Numerous other changes in the exact combination disclosed might be madewithin the scope of the invention claimed and still retainsome of thebenefits of this invention. The scope of the invention is indicated bythe following claims.

What I claim is:

1. The method which consists in moistening a thread with a vaporizableliquid, passing the moistened thread through the eye of a needle, sewingpaper with the needle and thread at such a rate of speed as to heat theneedle, and directing a jet of air against the needle and the moistenedthread beside the needle. 2

2. The method which consists in moistening a thread with a vaporizableliquid and a lubricant miscible with the liquid, passing the threadthrough the eye of a needle, sewmg paper with the needle and thread atsuch a speedas to heat the needle, and directing a jet of air againstthe needle and against the thread beside the needle.

3: The method which consists in moistening thread with soap and water,passing the thread through the eye of aneedle, seving paper with theneedle and thread at such a speed as to heat the needle, and directing ajet of air against the needle and against the thread beside the needle.Y

4. In a sewing machine, to operate the needle, in position to direct aregulated blast of air against the needle to prevent its overheating, apipe leading to said nozzle and a stop-cock in said pipe.

a needle, means anadjustable nozzle the thread adjacent to the 5. In asewing machine, a needle, means to operate the needle, means to guidethread through the receptacle on its way to the needle, and means todirect a jet of air against the needle.

6; In a sewing machine, a needle, means to operate the needle,areceptacle, means to guide thread through the receptacle to the needle,and means to directa jet of air against a receptacle for liquid, I

